HESI General Chairside Assisting Practice Exam

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What is the common function of a dental explorer?

To smooth rough edges of a filling
To remove plaque and calculus
To detect caries and surface irregularities
To cut tissue during surgery

The correct answer is: To detect caries and surface irregularities

A dental explorer is a specialized instrument widely used in dental practices primarily to detect carious lesions and identify surface irregularities on teeth. Its design includes a pointed tip, allowing for precise exploration of the tooth structure. This enables dental professionals to accurately assess the condition of the tooth enamel and dentin, making it easier to identify any decay or defects that may require treatment. The primary function of a dental explorer is diagnostic; it helps in the early detection of cavities, which is essential for effective treatment planning. By carefully running the explorer along the tooth surfaces, the clinician can feel for soft areas, pits, and fissures that suggest caries. This capability to assess surface texture and identify potential problems is critical for maintaining oral health and ensuring appropriate dental interventions are undertaken. The other options, while describing tasks performed in dentistry, do not align with the primary use of a dental explorer. Smoothing rough edges of a filling pertains more to finishing and polishing instruments, while removing plaque and calculus typically involves instruments like scalers and curettes. Cutting tissue during surgery relates to surgical instruments such as scalpels and surgical scissors.